The binding of a hormone to its receptor leads to

1. formation of the hormone-receptor complex

2. leads to biochemical changes in the target tissue

3. affects target tissue metabolism

4. All of these

Besides cAMP, which one of the following molecules acts as a “secondary messenger” in the biological system?

1. Ca⁺²

2. ATP

3. cDNA

4. CGTP

Incorrect match with respect to hormone and its chemical nature is

(1) Cortisol – Steroidal

(2) Thyroxine – Iodothyronine

(3) Glucagon – Steroidal

(4) Thyrocalcitonin – Proteinaceous

Which of the following is an incorrect statement

1. Hormones bind to specific proteins located in the target tissues only.

2. Receptors for hormones can only be present on the cell membrane

3. Each receptor is specific to one hormone only

4. Nuclear receptors are intracellular receptors

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?

1. Insulin and glucagon

2. Thyroxin and insulin

3. Somatostatin and oxytocin

4. Cortisol and testosterone

Identify A, B and C in the diagrammatic representation of the mechanism of hormone action.

Select the correct option from the following:

How many of the following hormones don’t enter the target cell?

Cortisol, Iodothyronine, Testosterone, Estradiol, FSH, Insulin, Glucagon

1. 4

2. 7

3. 3

4. 2

Which of the following set of hormones can easily pass through the cell membrane of a target cell and bind to specific intracellular receptors?

a. Placental progesterone

b. Aldosterone

c. Estrogen

d. Thyroxine

Mark the correct set:

1. b&c

2. a,b&c

3. a &c

4. a,b,c & d

A hormone that has intracellular receptors would be 
1. ACTH
2. ADH
3. Melatonin
4. Aldosterone

The biomolecule that cannot act as a chemical messenger [hormone] is:
1. Proteins

2. Steroids

3. Fatty acids

4. Carbohydrate